Safety attachment for looms



Aug. 31, 1926. 1,598,253

G. R. PLOTT SAFETY ATTACHMENT FOR LOOMS Filed June 10, 1925 2 Sheets-Sheet l GDP/ ,2052

Aug. 31,1926.

G. R. PLOTT SAFETY ATTACHMENT FOR LOOMS Filed June 10. 1925 2 Sheets-Sheet 2 III, 111/110 0 an DOA/M601,

I diff-32022 Patented Aug. 31, 1926.

units stares GEORGE B. PLO'IT, E HILLSBORO, NORTH CAROLINA.

SAFETY ATTACHMENT FOB LOOMS.

Application filed June 10, 1925. Serial No. 36,242.

This invention relates to improvements in weft replenishing mechanisms of automatic looms and more particularly to that type of such looms employing a stationary maga e zine having a plurality of bobbin guideways from which, at the proper time, the lowermost bobbins are released and permitted to descend by gravity tothe discharging end of the magazine, froln which position the loom by a transferrer arm. In a well known type of loom of this class a support is provided at one side of the delivery or discharging end or throat of the magazine and is moment to permit of its delivery to the shuttle tlirough the action of the transferrer arm, and the magazine is provided at the other side of the discharging end or throat with a fixed block having a rounded nose located opposite the support referred to and which assists the support in supporting the bobbin in position to be acted upon by the transferrer arm. It has been found, how ever, that in such a construction, if the bobbin should become slightly disarranged and fail to assume exactly the proper position with relation to the fixed and movable supports, damage to the magazine or to the 3 transferrcr arm occurs, thereby necessitating repairs and temporary shutting down of the loom. Therefore, the present invention has as one of its objects to provide, in lieu of the stationary support or block referred to above, a support which, to all intents and or (l4) purposes, will ordinarily be stationary or,

in other words, will function the same as the usual stationary support, when the bobbin is resting in proper position, at its head end, upon the two supports, but which will be yieldably mounted instead of being fixed, so that in the event the bobbin should be slightly disarranged, no damage will result when it is acted upon by the transferrerari In the accompanying drawings:

Figure 1 is a view in side elevation of a bobbins are delivered to the shuttle of the actuated to release the bobbin at the proper,

Figure 1, looking in the direction indicated by the arrows.

Figure 4- is a similar View on the line l--1- of Figure 1, looking in the direction indicated by the arrows.

Figure 5 is a perspective view illustrating the integral bobbin flange and lip constitutmg a part of the invention.

In the drawings, the invention is illus trated as embodied in the weft replenishing mechanism of a four-color automatic loom and the numeral 1 indicates the end frame or stand which supports the magazine 2, which magazine is provided with the bobbin guideways 3, from the lower ends of which, the bobbins, indicated by the reference letter 1B, are automatically and selectively delivered to the lower discharge end of the magazine indicated by the numeral 4. The numeral 5 indicates the usual transferrer arm and the numeral .6 the head at the end of this arm which is designed to engage the bobbin heads which are delivered to the discharge end 4 ofthe magazine and, in turn, deliver the bobbins into the shuttle of the loom. The numeral 7 indicates the moigable bobbin support which is mounted at the rear side of the delivery or discharging end of the magazine and which is common to looms of this type, and the numeral 8 indicates in general the support which embodies the present invention and which is mounted at the opposite or front side of the said discharging end of the magazine. As is customary, in such looms, the body plate of the magazine is formed at its lower end with a slightly arcuate slot "9, in which the head 6 of the transferrer arm .5 works.

The support 8 comprises a block 10 having substantially the contour best illustrated in Figure 2 of the drawings, and the butt end of this block is indicated by the numeral 11 and the block is provided at its other end with a rounded nose indicated by the numeral 12, the upper side of the block, indicated by the numeral 13, being inclined downwardly from the butt .end of the block to the said nose and merging with the round: ed surface of the nose. The butt end 11 of the block 10 is formed with a transverse opening 14, and the shank 15 of a pintle bolt is fitted through this opening, one end of the shank being reduced as at 16, to provide a shoulder 1 and the said end of the shank being fitted through an opening 18 The opening 18 is so positioned, and the block 10 is so proportioned, that normally the block will be supported in position with its nose located close to the forward wall of the slot 9, as best shown in Figures 1 and 2 of the drawings, and a coil spring 22 is arranged upon the shank of the bolt and has its outer end 23 engaged in a notch 24 formed in the head 25 of the said pintle bolt, the other end of the spring being eX- tended downwardly and rearwardly as at 26, and engaged in a notch 27 formed in the under side of the block, the spring serving to normally yieldably hold the nose end of the block in an elevated position or, in other words, the position shown in the said Figures 1 and 2 of the drawings. In order that the upward swinging movement of the block, under the influence of the spring 22, may be limited, so that the block will nor-- mally occupy the position illustrated, a stop pin or stud 28 is secured through an opening in the body plate of the magazine and has its projecting end cut away, as at 29, so as to be flush with the upper surface 13 of the said block and, therefore, not interfere with the movement of the head of the bobbin over the said surface of the block, in the event a bobbin from either of the two guideways below which the block is located, is delivered. from the magazine. Of course, if desired, a stud similar to the stop pin 28, might be formed directly upon the face of the body plate of the magazine. The upper surface 13 of the block 10 is formed with a recess or seat 30 which accommodates the said projecting end of the stop pin 28, and it will be understood at this point, that, under conditions to be presently explained, the nose end of the block may have downward swinging movement against the tension of the spring 22.

In connection with the block 10, there is provided a bobbin guiding member which is best illustrated in Figure 5 of the drawings and which is indicated by the numeral 31. The member 31 is preferably formed from an integral sheet metal blank and comprises a base portion 32 which is disposed flat against the under side of the block 10 and extends longitudinally thereof, as clearly illustrated in the drawings, the said base being secured to the under side of the block through the medium of a screw 33 which is fitted through an opening 34 formed in said base and threaded into a threaded opening in the block near the rear end thereof. For a purpose to be presently explained, the rear end portion of the base 32 is rolled upon itself, as indicated by the numeral 35, so as .to provide a rounded lip 36 which projects slightly beyond the lower side of the nose 12 of the block 10, as clearly sho (n in Figures 1 and 2. The numeral 3? indicates an upstanding flange which is formed integral with one edge of the base 32 and which lies flat against the outwardly presented face of the block 10, and this flange, for a portion of its length, extends at its upper edge slightly above the upper surface 13, of the block 10, as indicated by the numeral 38, so as to engage the rings upon the heads of bobbins which are delivered from the magazine onto the upper side of the block. The flange 37 at its forward end is recessed as at 39, to accommodate the pintle bolt 15, and the inner end of the spring 22 and thus provide for ready removal of the guiding member 31 upon removal of the screw 33. An opening 40 is formed in the flange 37 so that the adjacent end of the spring 22 may extend through the flange and be engaged in the notch 27 in the under side of the block 10, and a screw ll is fitted through this opening and threaded into the outer side of the block and tightened to cause its head to bear against the flange, thereby rendering the flange rigid.

In the operation of the loom, the bobbins are automatically delivered from the respective guideways 3 in the customary manner and are temporarily supported by the movable support 7 and the support 8 embodying the invention, the head end of the bobbin resting upon the supports until the transferrer arm 5 is actuated to deliver the bobbin into the shuttle which is then in position to receive the same. So long as the bobbins are properly delivered to the support, the support embodying the invention will maintain the position shown in Figure 1 of the drawings. However, should what is known as a bad change or hang up occur, at the time of release of any bobbin from its respective guideway, and the bobbin become disarranged, the support 8 will yield in a downward direction, at the time the head 6 of the transferrer arm 5 acts upon the bobbin, and thus prevent damage to the mechanism which would otherwise occur unde" the circumstances described. The head end of the bobbin will, of course, ride over the rounded nose 12 of the block 10 and over the rounded lip 36 of the guide member 31.

Having thus described the invention, what I claim is:

In a weft-replenishing mechanism for looms, the combination with the magazine for the bobbins having a discharge, and a transferrer arm having a head adapted. to

lSO

operate in the said discharge, of a bobbin support mounted on the magazine at the rear side of the discharge, ablock disposed at the forward side of the said discharge opposite the, said bobbin support and rearwardly and downwardly inclined upon its top side and terminating in a rounded nose adjacent the said discharge and having a notch in its under side, a bolt passing loosely through the front end of the block and let into the magazine and having its outer end projecting and the head notched, a coil spring mounted upon the projecting end of the bolt, and having one end engaging the notched head thereof and the opposite end 15 engaging the notch in the under side of the block to normally urge the nose end thereof upwardly, stop means for limiting the upward movement of the nose end of the block, and a plate covering the bottom and outer side of the block projecting slightly above the top to provide a lip, and having the rear end of the bottom portion extended downwardly to form a continuation of the nose of the block.

In testimon Y whereof I aflix m si nature.

GEORGE n. PLOTT. [n 8.] 

